Run the following to retrieve the sate of your devices

wpclt status

You should have an output like this. if you notice some empty results, run the command again.

PipeWire 'pipewire-0' [0.3.56, phantom@fedora, cookie:2650888390]
 └─ Clients:
        32. WirePlumber                         [0.3.56, phantom@fedora,
            pid:1422]
        33. WirePlumber [export]                [0.3.56, phantom@fedora,
            pid:1422]
        59. wpctl                               [0.3.56, phantom@fedora,
            pid:1474]

Audio
 ├─ Devices:
 │      38. Pixel earbuds                       [alsa]
 │      39. Built-in Audio                      [alsa]
 │
 ├─ Sinks:
 │  *   44. Pixel earbuds Analog Stereo         [vol: 0.74]
 │      46. Built-in Audio Analog Stereo        [vol: 1.00]
 │
 ├─ Sink endpoints:
 │
 ├─ Sources:
 │  *   45. Pixel earbuds Mono                  [vol: 0.74]
 │      47. Built-in Audio Analog Stereo        [vol: 0.74]
 │
 ├─ Source endpoints:
 │
 └─ Streams:

Now you can modify the output device as follows. Note by choosing 46, it will place set the default Sink to ‘Built-in Audio Analog Stereo’

wpclt set-default 46